Primitive arthropods, Biology

Assignment Help:

Primitive Arthropods

The primitive arthropods, Onychophora (for example Peripatus) have a series of paired legs which are not jointed but have a ringed appearance because of the presence of rows of papillae on them. Each leg consists of two parts, a conical proximal part along with their extrinsic muscles, and a small distal part comprising a pair of claws.

183_Primitive Arthropods.png

Figure: Peripatus lateral view of head

The limbs are protracted and retracted. Using these legs, and through extension and contraction of the body for working the legs they crawl. While a segment is extended, the legs are lifted and moved forward; subsequent effective stroke provides the animals a pushing force.


Related Discussions:- Primitive arthropods

Are birds rare in polar regions, How different are reptiles and birds conce...

How different are reptiles and birds concerning the maintenance of body temperature? Are birds rare in polar regions? Reptiles are heterothermic, i.e., they do not control thei

Define changing trends in dietary intake, Define Changing Trends in Dietary...

Define Changing Trends in Dietary Intake? As a practicing dietician, you must be sensitive to the society as a whole. The fat requirements have been worked out with a premise o

What is single s2, What is Single S 2 In cyanotic TOF, S, consists enti...

What is Single S 2 In cyanotic TOF, S, consists entirely of A, as P, is attenuated by a deformed pulmonary valve when there is valvar steuosis and aorta is placed anteriorly re

List five advantages of dsme, Q. List five advantages of DSME? Followin...

Q. List five advantages of DSME? Following are the advantages of DSME. It enables the patient to 1. Accept the disease. 2. Gain knowledge about disease, its prevention

Meiosis comprises two separate divisions, All of the following make meiosis...

All of the following make meiosis different from mitosis; EXCEPT A. Meiosis comprises two separate divisions. B. Meiosis only occurs during embryonic development. C. Chromoso

Define principle of detection of metanil yellow, Define Principle of Detect...

Define Principle of Detection of Metanil Yellow? Non-permitted colours like lead chromate, metanil yellow, auramine, rhodamine B are used to brighten the foods especially spice

Homologous and heterologous portions human sex chromosomes, What are the ho...

What are the homologous and the heterologous portions of the human sex chromosomes? The Homologous portion is that in which there are genes having alleles in both X and Y sex c

What is constipation, Q. What is Constipation? Constipation is irregula...

Q. What is Constipation? Constipation is irregular, infrequent or difficult passage of faeces. It is the most common physiological disorder of the alimentary tract. It is chara

Excretion in roundworm, EXCRETIO N IN ROUNDWORM - In ascaris 4 coelomo...

EXCRETIO N IN ROUNDWORM - In ascaris 4 coelomoducts present, attached to each other by canaliculli in front of controling cell i.e. Rennete cell. Excretion materials are gi

What is the function of the left ventricle, Q. What is the function of the ...

Q. What is the function of the left ventricle? Where does the blood go after leaving the left ventricle? The function of the left ventricle is to pump the blood under high pres

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd